Filament circuit resistance adjusting apparatus technical field

Details Filament circuit resistance adjusting apparatus technical field Filament circuit resistance adjusting apparatus technical field

2005-05-03

2005-05-03

Vo, Tuyet (Department: 2821)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S121000, C315S291000, C363S061000

Reexamination Certificate

active

06888922

ABSTRACT:
A filament circuit resistance adjusting apparatus (36), for a filament circuit (38) having a filament (50) with a first resistance is provided. The filament circuit resistance adjusting apparatus (36) includes a first resistor (70), which has a second resistance and is electrically coupled to the filament (50). The first resistor (70) adjusts the resistance of the filament circuit (38). A method for adjusting the resistance of the filament (50) is also provided.

REFERENCES:
patent: 3916202 (1975-10-01), Heiting et al.
patent: 4811375 (1989-03-01), Klostermann
patent: 5335161 (1994-08-01), Pellegrino et al.
patent: 5577093 (1996-11-01), Benz et al.
patent: 5781610 (1998-07-01), Miles
patent: 5875228 (1999-02-01), Truszkowska
patent: 6760407 (2004-07-01), Price et al.

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